In order to solve the problems of traditional X-ray image mosaic methods

such as the demand for fixed signs

poor robustness

and artifacts in panoramic images

we propose an automatic rotation-independent image mosaic method. This method is based on feature point registration and an improved correlation which is invariant to rotation. It needs lower overlapping areas among images. Two-dimensional dynamic weight and balance exposure have been adopted in image-fusion. Our experiments show that the registration algorithm can improve the accuracy of the results as well as the robustness

and the fusion algorithm can effectively balance the exposure difference and eliminate the mosaic artifacts

greatly improving the quality of the panoramic images.